Universe, Volume 10, Issue 6 (June 2024) – 40 articles
Cover Story (view full-size image):
We find self-gravitating lump-like structures that resemble solitonic excitations of scalar fields. Such configurations arise from Lagrangian densities built as powers of the usual kinetic scalar term in (2+1) dimensions. Their localized nature is proven according to a volcano-like energy density distribution that only vanishes at infinity and at an inner boundary. Furthermore, the inner boundary removes a circle from the accessible spatial domain but is characterized by smooth curvatures and complete geodesics. These facts allow us to regard such structures as being truly localized, non-singular lumps of energy whose eventual extension to the real (3+1) dimensional world could potentially yield signatures of astrophysical interest. View this paper
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